Incandescent gas-lamp.



No. 666,923,. Patented Jan. 29, MIDI.

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INCANDESGENT GAS LAMP. 7

(Application-filed Apr. 28, 1900.)

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(No Model.)

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CHARLES W. DICKEL, OF NEW YORK, N. Y., ASSIGNOR TO THE DIAMOND OF SAME PLACE.

INCANDESCENT GAS-LAM P.

SIPEGIFIGATION forming part of Letters Patent No. 666,923, dated January 29, 1901.

Application filed April 28, 1900.

T0 aZZ whom it may concern.-

Be it known that 1, CHARLES W. DIoKnL, a citizen of the United States, residing in the borough of Manhattan, city, county, and State of New York, have invented certain new and useful Improvements in Incandescent Gas- Burners, of which the following is a specification.

My invention relates to incandescent gasburners, and has for its object to produce a thoroughly efficient Bunsen burner which will not be liable to flash back and whichwill produce an extremely hot Bunsen flame in which gas combustion is very thorough.

In the accompanying drawings I have shown a form of burner embodying my invention, which, however, is not limited to the form shown, and I have pointed out the characteristic features of the invention in the claims at the end of this specification.

In the drawings, Figure l is a sectional ele-' vation of the Bunsen-burner incandescent gas-lamp. Fig. 2 is a broken-away detail view of the air-chamber and air-shutter, and Fig. 3 is a broken-away detail sectional elevation of the mixing-chamber.

In the drawings, a represents the air-chamber or exterior casing. The said chamber isprovided with upright slots I), through which the air enters, and is likewise preferably provided with an annular flange or threaded nipple c, which receives the gas-nipple d and around which the mixing-chamber is adapted to fit. The mixing-chamber e is preferably of tubular form and rests within the air-chamber surrounding the upper end of the gasnipple d. The lower end of the mixing-chamber is provided with apertures f and contains an adjustable foraminous casing g. The upper end of the mixing-chamber e is reduced and carries a collar 2', which fits snugly within the air-chamber. The lamp-galleryj is supported by a gallery-tube is, which fits upon the air chamber or casing a, as shown. This gallery-tube it rests upon the ring Z. This ring Z is adjustable up and down on the mixing-chamber, so as to limit the upward movement of the air-shutter (see two positions shown in Figs. 2 and 1) and also to support and limit the adjustment of the gallery-tube.

A spring m surrounds the gallery-tube and Serial No. 14,648. (No model.)

supports the adjustable cap 0, which is pro- Vided at its upper end with a spreader consisting of a foraminous dished partition 19, containing a dished disk or spreader-cup g. This cap 0 rides freely up and down, being springily supported by the spring m. The cap 0 is provided with an adj ustable mantlewire T, which supports an ordinary mantle s. The lamp may be provided with the usual chimneyt and globe or glassware supports it The operation of the structure is as follows:

7 The gas enters at d through the nipple d and,

passing upward through the apertured thin plate usual in such gas-nipples, passes into the mixing chamber e. The powerful upward suction produced has the effect of drawing air into the mixing-chamber in a finelysubdivided condition through the foraminous casing, by which a thorough ad mixture of air and gas is produced. The mixture passes upward, being heated in its passage by the walls of the long mixing-chamber e and is finally injected by the reduced upper end 72 into the chamber formed by the cap 0 and the gallerytube. The size of this chamber can be efficiently regulated by adjusting the ring l up or down on the tube a. The dished spreader plate or disk (1 has the effect of spreading the gas to produce a uniform flame to heat the mantle. .By reason of the springy mounting the mantle will not be liable to become broken, as any jarring is taken up by the spring m.

Having described my invention and the chief advantages thereof, I declare that what I claim, and desire to secure by Letters Patout, is

1. In an incandescent gas-lamp the combination with an air-chamber of a mixing-chamber apertured at its lower end and provided with a foraminous casing 9 covering the apertures and adapted to finely subdivide the air and a suitable spreader and mantle.

2. In an incandescent gas-lamp the combination with an air-chamber of a mixing-chamber apertured at its lower end and provided with a foraminous casing 9 covering the apertures and adapted to finely subdivide the air, said mixing-chamber being contracted or reduced at its upper end to produce an injector action and a suitable spreader.

3. In an incandescent gas-lamp the combination with an air-chamber of a mixing-chainber apertured at its lower end and provided with a foraminous casing g covering the apertures and adapted to finely subdivide the air, said mixing-chamber being contracted or reduced at its upper end to produce an injector action and a suitable spreader provided with a spreader-disk q.

4. The combination in an incandescent gaslamp of a casing, means for mixing the air and gas, an air-shutter and aregulating-ring Z movable on the casing and serving to limit the sliding motion of the air-shutter in one direction.

5. In an incandescent gas-lamp the combination of air and gas mixing apparatus, of 

